( 5x - 24 ) x 38 = 2 x 311
5x - 16 = 2 x 311 : 38
5x - 16 = 2 x 33
5x - 16 = 2 x 27
5x - 16 = 54
5x = 54 + 16
5x = 70
x = 70 : 5
x = 14
Vậy x = 14
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Lời giải:
$(5x-2^4).3^8=2.3^{11}$
$5x-16=2.3^{11}:3^8=2.3^3=2.27=54$
$5x=54+16=70$
$x=70:5=14$
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\(\left(5x-2^4\right).3^8=2.3^{11}\)
\(=>\left(5x-2^4\right)=2.3^{11}:3^8\)
\(=>\left(5x-2^4\right)=2.3^3\)
\(=>5x-2^4=2.27\)
\(=>5x-2^4=54\)
\(=>5x=54+16\)
\(=>5x=70\)
\(=>x=70:5\)
\(=>x=14\)
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